pykong

class DictDelta:
    '''Returns a list of ḱeys, which are added, deleted or whose values have been altered compared to the dict passed in the previous call.'''

    def __init__(self):
        self.old_dict = None

    def __call__(self, new_dict):
        """Returns list of changed keys."""

        # explicitly check for None, prevent all keys being returned on 1st run

pykong

def mt(a, memo=[]):
    a += 1
    print(a)
    memo.append(a)
    print(memo)
    
    
mt(1)
mt(2)
mt(3)

pykong

>>> def process_data(a, b, c, d):
>>>    print(a, b, c, d)

>>> x = {'a': 1, 'b': 2}
>>> y = {'c': 3, 'd': 4}

>>> process_data(**x, **y)
1 2 3 4

>>> process_data(**x, c=23, d=42)

pykong

# To be case-insensitive, and to eliminate a potentially large else-if chain:

m.lower().endswith(('.png', '.jpg', '.jpeg'))

pykong

from xml.etree.ElementTree import Element, tostring


def dict_to_xml(tag, d):
    '''
    Turn a simple dict of key/value pairs into XML
    '''
    elem = Element(tag)
    for key, val in d.items():
        if type(val) == dict:

pykong

>>> lst = ['a', 'a', 'a']

>>> len(set(lst)) == 1
True

>>> all(x == lst[0] for x in lst)
True

>>> lst.count(lst[0]) == len(lst)
True

pykong

#!/bin/bash

echo watch activated
inotifywait -qmre modify . | while read f

do
    python $1
done

pykong

import sublime
import sublime_plugin


s = sublime.load_settings('var_share.sublime-settings')


def consume():
    num = s.get("test_var")
    print("Consumer received: ", num)

pykong

#!/bin/bash
# run under sudo
# script for permanently setting environment variables, found here:
# https://stackoverflow.com/questions/13046624/how-to-permanently-export-a-variable-in-linux

add_env_var()
{
  KEY=$1
  VALUE=$2
  echo "export "$KEY"="$VALUE>>~/.bashrc

pykong

Erasing SSD

1. Boot with a live USB stick.
2. Get name of SSD by running lsblk
3. Run this command:

sudo hdparm --user-master u --security-set-pass 1234 /dev/sda &&
sudo hdparm --user-master u --sanitize-crypto-scramble 1234 /dev/sda

Troubleshooting: